Striping instrument



May 2, i933. E. B. MURPHY ET AL.

STRIPING INSTRUMENT med July 27, 1929 HEDEHZL'K A. EEA/arr STAHL M'. FARBEN 9 MW al 3mm/1160125' EDWARD 5. .MURPHY dum/wg Patented May 2, 1933 EDWARD B. MURPHY, FREDERICK A. BENOIT, AND EARL M. IBARDEN, OF DETROIT, MICHIGAN, ASSIGNORS TO PACKARD MOTOR GAR COMPANY, OF DETROIT, MICHIGAN,

A CORPORATION OF MICHIGAN STRIPING INSTRUMENT Application led July 2?,

This invention relates to striping instruments, and more particularly to feed mechanisms therefor.

Heretofore, in striping instruments equipped with pumps for delivering paint, lacquer or the like from a container to a nozzle for application to a surface, the pump has proved a dicult problem owing to the gears constituting the pumping element. Generally, the gears are microscopic and are, therefore, more or less delicate. They provide the only means for varying the capacity of the pump and as the size thereof is the controlling factor, obviously to change the gears to attain a variation in the capacity of the pump necessitates dismantling the instrument.

The delicate character of the gears requires great precision in the production thereof and in the assembly of the instrument. It is, therefore obvious that any suitable means cooperating with the feeding mechanism of a striping instrument for varying the capacity of the feeding means is highly desirable.

It is also obvious that means, providing a pump in which a standard gear may be used, would be equally desirable. It is, the aim of the present invention to provide a striping instrument with a pump adapted to deliver paint from a container through a nozzle by means of a gear pump, the capacity of which may be suitably controlled to deliver the paint from the nozzle of the instrument in a predetermined flow commensurate with the rate of movement of the instrument.

An object of the invention is to provide a striping instrument having means for regulating the feed mechanism thereof.

Another object of the invention is to provide a striping instrument having means for varying the capacity thereof, so that a predetermined quantity of paint or other fluid may be fed therefrom at a rate proportionate to the rate of movement of the instrument.

Another object of the invention is to provide a striping instrument having a container, a nozzle, and a pump associated with the container and the nozzle, and means associated with the pump for by-passing any portion of the output of the pump, so that 1929. Serial No. 381,681.

the flow from the nozzle may be regulated to apply a predetermined quantity of paint to a surface at a rate proportionate to the rate of movement of the instrument.

Another object of the invention is to provide a striping instrument having a container, a nozzle, and a pump, intermediate the container and the nozzle, and a by-pass from the pump to the container, and means associated therewith for controlling the bypass to govern the flow through the nozzle.

A further object of the invention is to provide a striping instrument having a container for the reception of paint or the like, a nozzle, and a pump associated therewith provided with means for by-passing over and above a given quantity of paint, and means within the container for regulating the by-pass to control the output.

A further object of the invention is to provide a striping instrument having a pump with a container connected to its intake, and a nozzle connected to its outlet and to provide means positioned on the nozzle for operating the pump, and a by-pass connecting the outlet of the pump with the container, having means positioned in the container readily accessible from the top thereof for regulating the by-pass so that the quantity of paint or the like fed thru the 'nozzle may be varied to apply stripes of different widths at a rate proportionate to the rate of movement of the operating means.

Still a further object of the invention is to provide a striping instrument having a pump for feeding paint or the like from a container through a nozzle, and means associated therewith for returning from the outlet of the pump to the container all paint or the like over and above a predetermined quantity, so that the output from the nozzle can be regulated regardless of the capacity of the pump.

Yet a further object of the invention is to provide a striping instrument having a pump provided with means for adjusting the capacity thereof so that paint may be applied with a predetermined flow; the instrument being positive and efficient in operation and yet of marked simplicity as a whole, and in 100 respect to its component parts, so that its manufacture may be economically facilitated both as regards its parts and their assembly. Other objects of the invention Will appear from the following descriptions taken in connection with the drawing which form a part of this specification, and in which:

Figure 1 is an elevation illustrating the instrument,

Figure 2 is a longitudinal sectional View, Figure 3 is an enlarged detailed View, Figure 4 is a sectional vieW substantially on line 4-4 of Figure 2, and

Figure 5 is an enlarged sectional view of the mechanism shown in Figure 2.

Referring to the drawing for more specific details of the invention represents a sleeve having an inturned liange 11 on one end thereof. The flange 11 provides a bearing for a disk 12 having formed integral therewith a sleeve 13 provided With a double diametral axial bore 14 th-e object of which Will hereinafter appear.

Positioned on the disk 12 Within the sleeve 10 is a plate or disk 15 having therein a pump 16, preferably of the gear type. As shown, the disk 15 is provided With overlapping bores in which are positioned intermeshing gears, and positioned over the plate 15 and gears therein is a disk or plate 17 having an intake port 18 and an outlet port 19 for the pump. The inlet port 18 communicates With a passage or chamber 20, and the outlet port communicates with the passage in a ,'nozzle 21 to be hereinafter described.

One of the gears of the pump 15 is connected to and driven by a sleeve 22. As shown, the sleeve 22 is positioned in the double diametral bore 14 in the sleeve 13, and

[form-ed on the sleeve is a collar 23 having therein a groove or channel for the reception of a key 24 secured in position by a split ring, and interposed between the sleeve 22 and the Wall defined bore 14 are friction reduction l rollers 25. The sleeve is also provided with a ing means not shown.

The sleeve 22 is axially bored as indicated at 27 to receive the nozzle 21. As shown, the nozzle 21 is provided with a flange 28 adapted to bear upon the plate 17 and the discharge end of the nozzle is cone shaped as indicated at 29. suitably positioned in the nozzle 21 is a diametral pin 30, and positioned in the nozzle for reciprocation between the pin and the discharge end thereof'is a needle 31 hav ing a tapering end portion 32 adapted te close the discharge end of the nozzle when it is not in engagement with the surface to be operated upon.

Positioned in the sleeve 10 on the ange 28 of the nozzle is a disk or balile plate 33 having ports 34 connecting the chamber with a container to be hereinafter described. The disk 33 has a support or boss 35 axially bored to provide a passage 36 and externally threaded as at 37. The' axial bore 36 registers with the passage in the nozzle, and formed in the upper end of the bore 36 is a valve seat 38 adapted to receive a ball valve 39.

A sleeve 40 is threaded on the boss 35, and positioned in the sleeve is a spring pressed plunger 41 adapted to retain the ball on the seat 38. The plunger 41 is fluted as indicated at 42 and is fitted in the sleeve with small play so that when the valve 39 is open, the passage 36 will communicate With the sleeve. The sleeve 40 is provided at its upper end with a diametral slot 43 by means of which the sleeve may be adjusted on the threaded boss 35 to increase or decrease the tension of the spring to control the passage 36.

Threaded in the sleeve 10 is a container 44 which also )rovides a suitable handle for the instrument. The lower or discharge end of the container engages the disk 33 and clamps the nozzle and the pump together with its related parts in position. The container is provided with the conventional cover r cap 45 having the usual vent 46 and knurled portion for the easy handling thereof.

In operation, assuming that the container is filled With paint, lacquer' or the like, and that the nozzle of the instrument is engaged with the surface to be operated upon. In this position the needle in the nozzle has moved upward to engage the abutment in the nozzle and to open the discharge end of the nozzle, and the roller for actuating the pump is in engagement with a suitable guide, such as a ruler. The instrument is then moved from right to left, and during the movement thereof. the roller operates the pump to draw the paint or lacquer from the container through he pump and deliver' it to the nozzle from whence it is forced through the discharge end of the nozzle.

itssuming that the capacity of the pump is such that it would, under normal conditions, discharge an excessive quantity of paint, under such conditions, the tension on the spring pressed plunger is regulated so that paint under pressure will lift the ball and plunger to permit any desired excess quantity to be lay-passed .from the outlet of the pump through the passage 36, around the plunger` and thence tarough the passage in the sleeve to the top thereof, where it returns to the container. rThis b v-pass is of such a character that the flow of paint thru the nozzle may be regulated to deliver any predetermined quantity within the limits of the instrument. It is obvious that the capacity of the pump may be retained constantly, and yet the output from the nozzle varied to discharge the quantity of paint desired at a rate proportionate to the rate ot movement ot the instrument. p

Although this invention has been described in connection with certain spcciiic employments, the principles involved are susceptible to nunierous other applications, that will readily occur to a person skilled in the art. The invention is, therefore, to be limited only as indicated 1y the scope oi. the appended claims.

Having thus described the various features or" our invention, what We claim as neu7 and desire to secure by Letters .latcnt is:

i. ln a striping instrument, a nozzle having a passage therethrough, a support havipg a passage therein communicating with ie passage in the nozzle of tno instrument, a ubular member threaded on the support, said tubular member communicating with the passage in the support and with the interior ot the container', a spring pressed plunger positioned in the tubular member having a passage therein adapted to communicate With the passage in the support, and a ball valve intermediate the plunger and the support adapted to close the passage in the support, said tubular member being adjustable to increase or decrease the tension oi' the spring actuating the plunger.

2. A striping instrument comprising a sleeve, a nozzle supported. by the sleeve, a pump mechanism positioned in the sleeve, including a baille plate, a container' threaded in the sleeve, a support possitioned on the baille plate having a passage therein communicating with the iassage in the nozzle, a tubular member threaded on the support, a spring pressed plunger positioned in .the tubular member, a ball valve intermediate the plunger and the support adapted to close the passage in the support, and means .ior manipulating the tubular member to adjust the tension on the spring controlling the plunger. l

3. A striping instrument comprising a sleeve, a nozzle supported by the sleeve, a pump positioned in the sleeve, mea s on the nozzle for operating the pump, a baille plate in the sleeve, a container threaded in the sleeve engaging the baille plate, a support o n the plate having a passage therein communicating with the passage in the nozzle, a tunnlar member extending through the container, a plunger positioned for recij'irocation in the tubular member with small play, a ball valve intermediate the plunger and the support adapted to close the passage in the support, and means in the tree end of the tubular member for adjusting the member to increase or decrease the tension on the spring actuating the plunger.

li. A striping instrument comprising a support having inlet and by-pass openings therein, a nozzle connected with a by-pass opening, a battle plate spaced from said support having inlet and outlet openings therein, a. gear plate adjacent the baille plate, gears disposed Within the gear plate, a sleeve adjacent the gear plate and a second sleeve disposed between the nozzle and the first named sleeve for moving the gears.

5. A striping instrument comprising a support having inlet openings therein, a bafile plate having inlet and outlet openings therein, a nozzle having a. ilange at its upper end for engaging the nozzle With the support, :z plate adjacent the baille plate, gears disposed within the gear plate, a. disk and sleeve adjacent the gear plate, means for clamping the support. baille plate, nozzle flange, gear plate, and disk and sleeve together to constitute a positive feeding means.

6. A striping instrument comprising a supporthaving inlet openings therein, a bafile plate having inlet and outlet openings therein, a nozzle having a ilange at its upper end for engaging the nozzle with the support, a gear plate adjacent the baille plate, gears disposed Within the gear plate, a sleeve adjacent the gear, and a second sleeve disposed between the nozzle and the iirst named sleeve and attached to one of the gears.

7. A striping instrument comprising a. nozzle having a passage therethrough, a container, a support having a passage communicating with the passage in the nozzle of the instrument and with the container, a tubular member adjustably mounted on the support and enclosed Within the container, said tubular member communicating with the passage in the support and with the interior ol t-he container, a. spring pressed plunger positioned in the tubular member, and a. valve controlled by the plunger adapted to close the passage in the. support.

8. A striping instrument comprising a sleeve, a nozzle supported by the sleeve, a pump mechanism positioned in the sleeve including a. baille plate, a container threaded on the sleeve, a support positioned on the baille plate having apassage therein communicating with the passage in the nozzle, a tubular member threaded on the support, a spring pressed plunger positioned in the tubular member, and a ball valve intermediate the plunger and the support adapted to close the passage in the support, said tubular member being adjustable to adjust the tension on the spring controlling the plunger.

9. A striping instrument comprising a sleeve having an inwardly extending ilange, a gear pump carrying disk in the sleeve adjacent the flange, aI plate on the disk, a. nozzle extending through the disk and the plate, said nozzle having a flanged end resting on the top tace of the plate, a. baille resting on the nozzle ilanve, a support on the baille having a passage therethrough communicating With the nozzle, a tubular extension mounted on the support, pressure operated valve means between the extension and the support, and a container detachably connected to the sleeve and enclosing the bafie and the extension, said baile and pla-te having passages establishing Communication between the interior of the' container and the disk.

In testimony whereof We afHX our signatures.

EDWARD B. MURPHY. FREDERICK A. BENOIT. EARL M. BARDEN. 

